Touch screen panel and display device including the same

ABSTRACT

A touch screen panel according to the present disclosure includes a plurality of touch sensors. Each of the touch sensors includes a first touch electrode unit extending in a first direction, and a second touch electrode unit extending in a second direction. The first touch electrode unit includes a plurality of first mesh pattern electrodes disposed to be spaced apart from each other in a sensing area where the first touch electrode unit and the second touch electrode unit intersect, and the second touch electrode unit includes a plurality of second mesh pattern electrodes disposed between the plurality of first mesh pattern electrodes to be spaced apart from each other in the sensing area. A redundant load in an area other than the sensing area of the touch screen panel is minimized so that a touch response speed of the touch screen panel can be improved.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of Korean Patent Application No.10-2017-0108958 filed on Aug. 28, 2017, in the Korean IntellectualProperty Office, the disclosure of which is incorporated herein byreference into the present application.

BACKGROUND Field

The present disclosure relates to a touch screen panel and a displaydevice including the same, and more particularly, to a metal mesh typetouch screen panel with an improved touch performance and a displaydevice including the same.

Description of the Related Art

A touch screen panel is a device which uses a screen touch or a gestureof a user as input information and is mounted on personal portableelectronic devices such as smartphones or tablet PCs to be widely used.The touch screen panel is mainly used to be disposed close to a devicefor displaying images such as a display panel, and users can generallyinput touches to the image displayed on the display panel.

Generally, the touch screen panel includes a touch sensing electrode forsensing a touch input of the user. A transparent electrode formed of atransparent conductive material, such as indium tin oxide (ITO), is usedas the touch sensing electrode of the touch screen panel to allow theuser to visibly recognize images disposed on the display panel.

Generally, ITO used for the touch sensing electrode of the touch screenpanel has a lower flexibility than a metal material. Therefore, when thetouch screen panel which uses ITO as a material of the touch sensingelectrode is applied to a flexible display device, ITO can be cracked sothat defects of the touch screen panel can cause problems. Further,since ITO has a higher sheet resistance than that of the metal material,when the touch screen panel which uses ITO as a material of the touchsensing electrode is applied to a large size display device, there canbe a problem in the driving of the touch screen panel due to the highsheet resistance of ITO. Further, there is a problem in that atransmittance of a transparent conductive oxide such as ITO is low.Furthermore, since ITO is a rare material and is expensive to purchase,the manufacturing cost of the touch screen panel can also be expensive.

SUMMARY

The inventors of the present disclosure thus developed a novel metalmesh type touch screen panel for solving the problems and limitations ofa general touch screen panel which uses ITO as a material for a touchsensing electrode. However, when the novel metal mesh type touch screenpanel is applied to an electroluminescent display device, there may be aproblem in that a touch sensitivity or a response speed may be lowereddue to a parasitic capacitance between the display panel and the touchscreen panel.

Therefore, the inventors of the present disclosure further developed atouch screen panel which can reduce an internal parasitic capacitanceand an external parasitic capacitance to improve the response speed anda display device including the same.

Another object to be achieved by the present disclosure is to provide atouch screen panel which is attached to the display panel but does notdeteriorate optical characteristics of the display device and a displaydevice including the same.

Another object of the present disclosure is to provide a touch screenpanel and a display having the touch screen panel, which address thelimitations and disadvantages associated with the related art.

Objects of the present disclosure are not limited to the above-mentionedobjects, and other objects, which are not mentioned above, can beclearly understood by those skilled in the art from the followingdescriptions.

According to an aspect of the present disclosure, a touch screen panelincludes a plurality of touch sensors and each of the touch sensorsincludes a first touch electrode unit extending in a first direction,and a second touch electrode unit extending in a second direction. Thefirst touch electrode unit includes a plurality of first mesh patternelectrodes disposed to be spaced apart from each other in a sensing areawhere the first touch electrode unit and the second touch electrode unitintersect. The second touch electrode unit includes a plurality ofsecond mesh pattern electrodes disposed between the plurality of firstmesh pattern electrodes to be spaced apart from each other in thesensing area.

According to another aspect of the present disclosure, a display deviceincludes a display panel including a bank disposed on a substrate and aplurality of pixels defined by the bank, a touch screen panel includinga plurality of touch sensors, and a touch driver which drives the touchscreen panel. Each of the touch sensors includes a first touch electrodeunit which is disposed on the bank and extends in a first direction, anda second touch electrode unit which is disposed on the bank and extendsin a second direction. The first touch electrode unit includes aplurality of first mesh pattern electrodes disposed to be spaced apartfrom each other in a sensing area where the first touch electrode unitand the second touch electrode unit intersect, and the second touchelectrode unit includes a plurality of second mesh pattern electrodesdisposed between the plurality of first mesh pattern electrodes to bespaced apart from each other in the sensing area.

Other detailed matters of the embodiments are included in the detaileddescription and the drawings.

According to the aspect of the present disclosure, the touch screenpanel forms a maximum mutual capacitance for sensing the touch bydisposing a first touch electrode unit and a second touch electrode unitto intersect each other in a sensing area so that a redundant load canbe minimized in an area other than the sensing area of the touch screenpanel to improve a touch response speed of the touch screen panel.

Further, according to the aspect of the present disclosure, the displaydevice including the touch screen panel can dispose a mesh type firsttouch electrode unit and a mesh type second touch electrode unit on amesh type bank to improve the optical characteristics of the displaypanel.

The effects according to the present disclosure are not limited to thecontents exemplified above, and more various effects are included in thepresent specification.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features and other advantages of thepresent disclosure will be more clearly understood from the followingdetailed description taken in conjunction with the accompanyingdrawings, in which:

FIG. 1 is a view for explaining a touch screen panel according to anembodiment of the present disclosure;

FIG. 2A is a view for explaining a touch sensor of a touch screen panelaccording to an embodiment of the present disclosure and FIG. 2B is aview for explaining a sensing area of a touch screen panel according toan embodiment of the present disclosure;

FIG. 3A is a view for explaining a first touch electrode unit of a touchscreen panel according to an embodiment of the present disclosure andFIG. 3B is a view for explaining a second touch electrode unit of atouch screen panel according to an embodiment of the present disclosure;

FIG. 4A is a view selectively illustrating only a part of a second meshpattern and a second internal connection line of a touch screen panelaccording to an embodiment of the present disclosure and FIG. 4B is aview selectively illustrating only a part of a second externalconnection line and a connection pattern of a touch screen panelaccording to an embodiment of the present disclosure;

FIG. 5A is an enlarged view of a region B illustrated in FIG. 3B andFIG. 5B is a cross-sectional view taken along the line Vb-Vb′illustrated in FIG. 5A;

FIG. 6 is an enlarged view of a region A illustrated in FIG. 2A;

FIGS. 7A and 7B are views for explaining a dummy electrode of a touchscreen panel according to an embodiment of the present disclosure;

FIG. 8 is a schematic block diagram for explaining a display deviceincluding a touch screen panel according to an embodiment of the presentdisclosure;

FIG. 9 is a view for explaining a pixel of a display device including atouch screen panel according to an embodiment of the present disclosure;and

FIG. 10 is a cross-sectional view illustrating a display deviceincluding a touch screen panel according to an embodiment of the presentdisclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Advantages and characteristics of the present disclosure and a method ofachieving the advantages and characteristics will be clear by referringto various embodiments described below in detail together with theaccompanying drawings. However, the present disclosure is not limited tothe embodiments disclosed herein but will be implemented in variousforms. The embodiments are provided by way of example only so that aperson of ordinary skilled in the art can fully understand thedisclosures of the present disclosure and the scope of the presentdisclosure. Therefore, the present disclosure will be defined only bythe scope of the appended claims.

Further, in the following description, a detailed explanation of knownrelated technologies can be omitted to avoid unnecessarily obscuring thesubject matter of the present disclosure. The terms such as “including,”“having,” and “consist of” used herein are generally intended to allowother components to be added unless the terms are used with the term“only”. Any references to singular can include plural unless expresslystated otherwise.

Components are interpreted to include an ordinary error range even ifnot expressly stated.

Although the terms “first”, “second”, and the like are used fordescribing various components, these components are not confined bythese terms. These terms are merely used for distinguishing onecomponent from the other components. Therefore, a first component to bementioned below can be a second component in a technical concept of thepresent disclosure.

Like reference numerals generally denote like elements throughout thespecification.

The features of various embodiments of the present disclosure can bepartially or entirely bonded to or combined with each other and can beinterlocked and operated in technically various ways understood by thoseskilled in the art, and the embodiments can be carried out independentlyof or in association with each other.

Hereinafter, various embodiments of the present disclosure will bedescribed in detail with reference to accompanying drawings.

FIG. 1 is a view for explaining a touch screen panel according to anembodiment of the present disclosure. All the components of the touchscreen panel according to all embodiments of the present disclosure areoperatively coupled and configured.

Referring to FIG. 1, a touch screen panel 113 according to an embodimentof the present disclosure includes a plurality of touch sensors TS1 toTS9 which are disposed on a substrate 113S in a matrix and sense a touchoperation of a user, a plurality of pads PAD1 and PAD2 connected to anexternal touch driver, and a plurality of routing lines RL1 to RL6 whichconnect the plurality of touch sensors TS1 to TS9 and the plurality ofpads PAD1 and PAD2.

Here, the substrate 113S can be formed of a transparent and/or flexiblematerial. For example, the substrate 113S can be formed of plastic whichis transparent and has a bendable property, such as polyethyleneterephthalate (PET) or polyimide (PI).

The plurality of touch sensors TS1 to TS9 are connected to each other,and the plurality of connected touch sensors TS1 to TS9 are connected tothe plurality of pads PAD1 and PAD2 through the plurality of routinglines RL1 to RL6. By doing this, each of the touch sensors TS1 to TS9 isapplied with a touch signal for sensing a touch from the external touchdriver to sense the touch.

For example, as illustrated in FIG. 1, the plurality of touch sensorsTS1 to TS9 can be configured by first to ninth touch sensors TS1 to TS9disposed in a 3×3 matrix. However, the arrangement of the plurality oftouch sensors is not limited thereto, and can be expanded or modified invarious ways.

Further, the first, fourth, and seventh touch sensors TS1, TS4, and TS7disposed in a first direction are connected to the second pad PAD2through the fourth routing line RL4. The second, fifth, and eighthsensors TS2, TS5, and TS8 disposed in the first direction are connectedto the second pad PAD2 through the fifth routing line RL5. The third,sixth and ninth sensors TS3, TS6, and TS9 disposed in the firstdirection are connected to the second pad PAD2 through the sixth routingline RL6.

The first to third touch sensors TS1, TS2, and TS3 disposed in a seconddirection are connected to the first pad PAD1 through the first routingline RL1. The fourth to sixth sensors TS4, TS5, and TS6 disposed in thesecond direction are connected to the first pad PAD1 through the secondrouting line RL2. The seventh to ninth sensors TS7, TS8, and TS9disposed in the second direction are connected to the first pad PAD1through the third routing line RL3.

Here, different touch signals can be applied to the first pad PAD1 andthe second pad PAD2 to drive the touch screen panel 113 in a mutualcapacitive manner and the same touch signal can be applied to the firstpad PAD1 and the second pad PAD2 to drive the touch screen panel 113 ina self-capacitive manner.

FIG. 2A is a view for explaining a touch sensor of the touch screenpanel according to an embodiment of the present disclosure and FIG. 2Bis a view for explaining a sensing area of the touch screen panelaccording to an embodiment of the present disclosure.

Specifically, FIG. 2A is a view for explaining a first touch electrodeunit Tx and a second touch electrode unit Rx disposed in each of thetouch sensors TS1 to TS9 of the touch screen panel 113.

In the example of FIG. 2A, the first touch sensor TS1 among theplurality of touch sensors TS1 to TS9 will be mainly described and theremaining touch sensors, that is, the second to ninth touch sensors TS2to TS9 have the same or substantially the same structure as the firsttouch sensor TS1. However, the configuration and structure of the touchsensors are not limited thereto and a size and a design of each of thetouch sensors at an outer periphery of the touch screen panel 113 can bepartially modified. In FIG. 2A, the first touch electrode unit Tx isrepresented by a solid line and the second touch electrode unit Rx isrepresented by a dotted line.

As illustrated in FIG. 2A, the first touch sensor TS1 includes the firsttouch electrode unit Tx extending in a first direction and the secondtouch electrode unit Rx extending in a second direction. The first andsecond directions are perpendicular to each other or substantiallyperpendicular to each other.

The first touch electrode unit Tx is applied with a touch signal throughthe fourth routing line RL4 and the second touch electrode unit Rx isapplied with a touch signal through the first routing line RL1. Here,the first touch electrode unit Tx and the second touch electrode unit Rxcan transmit and receive different touch signals to drive the touchscreen panel 113 in a mutual capacitive manner. Further, the first touchelectrode unit Tx and the second touch electrode unit Rx can be appliedwith the same touch signal to drive the touch screen panel 113 in aself-capacitive manner.

Further, as illustrated in FIG. 2A, the first touch sensor TS1 can bedivided into a plurality of touch areas, e.g., first to ninth touchareas TA1 to TA9, with respect to an arrangement relationship of thefirst touch electrode unit Tx and the second touch electrode unit Rx.

Specifically, an area where the first touch electrode unit Tx extendingin the first direction and the second touch electrode Rx extending inthe second direction intersect each other is defined as a fifth toucharea TA5 or a sensing area disposed at a center portion of the firsttouch sensor TS1. Areas at the top, left, right and bottom of the fifthtouch area TA5 are defined respectively as second, fourth, sixth, andeighth touch areas TA2, TA4, TA6, and TA8. Further, areas adjacent tothe fifth touch areas TA5 in diagonal line directions are defined asfirst, third, seventh, and ninth touch areas TA1, TA3, TA7, and TA9.

That is, the first to third touch areas TA1 to TA3 are disposed in anupper portion of the first touch sensor TS1 in the second direction, thefourth to sixth touch areas TA4 to TA6 are disposed in the middle of thefirst touch sensor TS1 in the second direction, and the seventh to ninthtouch areas TA7 to TA9 are disposed in a lower portion of the firsttouch sensor TS1 in the second direction.

By doing this, the first touch electrode unit Tx extending in the firstdirection can be disposed over the second, fifth, and eighth touch areasTA2, TA5, and TA8, and the second touch electrode unit Rx extending inthe second direction can be disposed over the fourth, fifth, and sixthtouch areas TA4, TA5, and TA6. In other words, the first touch electrodeunit Tx can extend in the first direction at the center portion of thefirst touch sensor TS1. The second touch electrode unit Rx can extend inthe second direction at the center portion of the first touch sensorTS1. Further, the first touch electrode unit Tx and the second touchelectrode unit Rx can be configured to intersect each other at thecenter portion of the first touch sensor TS1.

As illustrated in FIG. 2B, the first touch electrode unit Tx disposed inthe fifth touch area TA5 which is a sensing area can include a firstmesh pattern, and the second touch electrode unit Rx disposed in thefifth touch area TA5 can include a second mesh pattern. In one example,rows of the first and second mesh patterns extending in the firstdirection are alternatingly disposed. Here, the touch operation of theuser can be sensed by sensing a change in the mutual capacitance betweenthe first mesh pattern and the second mesh pattern.

Hereinafter, the first touch electrode unit Tx and the second touchelectrode unit Rx disposed in the first touch sensor TS1 will bedescribed in detail with reference to FIGS. 3A to 4B.

FIG. 3A is a view for explaining a first touch electrode unit Tx of atouch screen panel according to an embodiment of the present disclosureand FIG. 3B is a view for explaining a second touch electrode unit Rx ofa touch screen panel according to an embodiment of the presentdisclosure.

Here, the first touch electrode unit Tx illustrated in FIG. 3A and thesecond touch electrode unit Rx illustrated in FIG. 3B are separatelyillustrated only to better show the operation of the first and secondtouch electrode units Tx and Rx. However, in the touch screen panel 113according to the embodiment of the present disclosure, the first touchelectrode unit Tx and the second touch electrode unit Rx are disposed tooverlap each other in the fifth touch area TA5.

As illustrated in FIG. 3A, the first touch electrode unit Tx includes aplurality of first mesh patterns Tx_M and a plurality of first internalconnection lines Tx_L1 which are all disposed in the fifth touch areaTA5, and further includes a plurality of first external connection linesTx_L2 which are disposed in the second touch area TA2 and the eighthtouch area TA8.

The plurality of first mesh patterns Tx_M are disposed in the fifthtouch area TA5 to sense the touch operation.

Specifically, the plurality of first mesh patterns Tx_M extending in thefirst direction are disposed to be spaced apart from each other. Sincethe plurality of first mesh patterns Tx_M extending in the firstdirection are spaced apart from each other, a space between the firstmesh patterns Tx_M can be generated.

The first mesh patterns Tx_M illustrated in FIG. 3A extend in columns,but are not limited thereto and various types and configurations of meshpatterns can be used. Specifically, the mesh pattern can be configuredto be located in the middle between a plurality of sub pixels R, G, andB in a bank area between the plurality of sub pixels R, G, and B.

The plurality of first internal connection lines Tx_L1 connect theplurality of first mesh patterns Tx_M disposed to be spaced apart fromeach other, to each other, to effectively transmit a touch signalbetween the first mesh patterns Tx_M disposed to be spaced apart fromeach other.

Specifically, the plurality of first internal connection lines Tx_L1extend in the second direction and are disposed to be spaced apart fromeach other to electrically connect the plurality of first mesh patternsTx_M extending in the first direction to each other. The plurality offirst internal connection lines Tx_L1 can be disposed parallel to eachother or substantially parallel to each other.

By this configuration, the touch signal can be effectively shared by allof the plurality of first mesh patterns Tx_M.

Further, even though the first internal connection lines Tx_L1 can beformed in various patterns, such as a zigzag pattern or a wavy pattern,the first internal connection lines can be desirably straight linesextending in the second direction. The plurality of first internalconnection lines Tx_L1 are formed to be straight lines so that aresistance of the first internal connection lines Tx_L1 is reduced. Bydoing this, the touch signal applied through the first internalconnection lines Tx_L1 is effectively transmitted so that a responsespeed of the touch screen panel 113 can be improved. In FIG. 3A, thefirst internal connection lines Tx_L1 are illustratively expressed asstraight lines, but are not limited thereto and can be configured in apattern which is not a straight line. Further, the first internalconnection lines Tx_L1 can be formed along banks between the pluralityof sub pixels R, G, B in a direction intersecting the first externalconnection lines Tx_L2.

In other words, in order to form the first internal connection linesTx_L1 to be straight lines, a shape of the sub pixels can be modified.For example, in order to form the first internal connection lines Tx_L1to be straight lines, shapes of the sub pixels R and G located on bothsides of the first internal connection lines Tx_L1 can be designed inthe form of facing triangles. Here, the shapes of the sub pixels R and Gcan be triangles which are designed such that one sides of the trianglesare parallel to each other with respect to the first internal connectionlines Tx_L1.

The plurality of first external connection lines Tx_L2 serve to connectthe first mesh pattern Tx_M of the touch sensor TS with externalcomponent(s).

For example, the plurality of first external connection lines Tx_L2connect the plurality of first mesh patterns Tx_M with an external touchsensor TS adjacent thereto or connect the plurality of first meshpatterns Tx_M with the fourth to sixth routing lines RL4 to RL6 (seeFIG. 1).

Specifically, the plurality of first external connection lines Tx_L2with respect to the seventh touch sensor TS7 illustrated in FIG. 1 willbe described. Referring to FIGS. 1 and 3A, the plurality of firstexternal connection lines Tx_L2 disposed in the second touch area TA2 ofthe seventh touch sensor TS7 are connected to the fourth touch sensorTS4 disposed above the seventh touch sensor TS7. The plurality of firstexternal connection lines Tx_L2 disposed in the eighth touch area TA8 ofthe seventh touch sensor TS7 are connected to the fourth routing lineRL4 disposed below the seventh touch sensor TS7.

Here, the plurality of first external connection lines Tx_L2 can beformed to have various shapes such as a straight line or a mesh, but canbe desirably formed to have a zigzag pattern in consideration of theshape of the sub pixels of the display device, the shape of the bankBNK, and the transmittance.

Further, the plurality of first mesh patterns Tx_M, the first internalconnection lines Tx_L1, and the first external connection lines Tx_L2which configure the first touch electrode unit Tx can be formed in thesame layer. That is, a layer in which the first mesh patterns Tx_M areformed, a layer in which the first internal connection lines Tx_L1 areformed, and a layer in which the first external connection lines Tx_L2are formed can be the same layer. For instance, the bottom surfaces ofthe first mesh patterns Tx_M, the first internal connection lines Tx_L1,and the first external connection lines Tx_L2 can be coplanar.Therefore, the first touch electrode unit Tx can be formed by oneprocess.

Further, the plurality of first mesh patterns Tx_M, the first internalconnection lines Tx_L1, and the first external connection lines Tx_L2,which configure the first touch electrode unit Tx, can be formed of ametal having a high electric conductivity. For example, the plurality offirst mesh patterns Tx_M, the first internal connection lines Tx_L1, andthe first external connection lines Tx_L2, which configure the firsttouch electrode unit Tx, can be formed of a single layer or multiplelayers formed of aluminum (Al), copper (Cu), molybdenum (Mo), chrome(Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), or an alloythereof. The first touch electrode unit Tx is formed of the metal havingexcellent electric conductivity so that a touch signal for driving thetouch screen panel 113 can be quickly transmitted from the externaltouch driver to the first touch electrode unit Tx. Since the touchsignal transmitting speed is improved, the touch driver can quicklysense the touch operation of the user so that the response speed of thetouch screen panel 113 can be improved.

As illustrated in FIG. 3B, the second touch electrode unit Rx includes aplurality of second mesh patterns Rx_M and a plurality of secondinternal connection lines Rx_L1 which are all disposed in the fifthtouch area TA5, a connection pattern, and a plurality of second externalconnection lines Rx_L2 disposed in the fourth touch area TA4 and thesixth touch area TA6. In the example of FIG. 3B, the second meshpatterns Rx_M, the second internal connection lines Rx_L1, and thesecond external connection lines Rx_L2 are shown in solid lines,although they are shown in dotted lines in FIGS. 2A and 2B. The secondinternal connection lines Rx_L1 and the second external connection linesRx_L2 are electrically connected to each other through the second meshpattern Rx_M. Here, the second internal connection lines Rx_L1 and thefirst internal connection lines Tx_L1 are disposed so as not to overlapeach other. For example, both the second internal connection lines Rx_L1and the first internal connection lines Tx_L1 can be straight lineswhich extend in the second direction to be parallel to each other.

FIG. 4A is a view selectively illustrating only parts of a second meshpattern and a second internal connection line of a touch screen panelaccording to an embodiment of the present disclosure. FIG. 4B is a viewselectively illustrating only parts of a second external connection lineand a connection pattern of a touch screen panel according to anembodiment of the present disclosure. Therefore, a part of FIG. 4A and apart of FIG. 4B can be omitted or repeated. That is, FIGS. 4A and 4Bshow only parts of one touch sensor (e.g., TS1) of the touch screenpanel 113 shown in FIGS. 2A to 3B for easy explanation, where each ofthe touch sensors TS1 to TS9 can have this configuration.

The plurality of second mesh patterns Rx_M are disposed in the fifthtouch area TA5 to sense the touch operation by the touch driver.

Referring to FIGS. 2A and 4A, the plurality of second mesh patterns Rx_Mextending in the first direction are disposed to be spaced apart fromeach other. Further, the second mesh patterns Rx_M extending in thefirst direction are disposed between the plurality of first meshpatterns Tx_M to be spaced apart from each other. That is, the secondmesh patterns Rx_M and the first mesh patterns Tx_M can be alternatelydisposed on different layers in the second direction.

The second mesh patterns Rx_M illustrated in FIG. 4A extend in columns,but are not limited thereto and various types and configurations of meshpatterns can be used.

The plurality of second internal connection lines Rx_L1 connect theplurality of second mesh patterns Rx_M disposed to be spaced apart fromeach other to effectively transmit a touch signal between the secondmesh patterns Rx_M disposed to be spaced apart from each other.

Specifically, the plurality of second internal connection lines Rx_L1extend in the second direction and are disposed between the plurality offirst internal connection lines Tx_L1 spaced apart from each other toelectrically connect the plurality of second mesh patterns Rx_Mextending in the first direction to each other.

By doing this, the touch signal can be effectively shared by all of theplurality of second mesh patterns Rx_M.

Further, even though the second internal connection lines Rx_L1 can beformed in various patterns, such as a zigzag pattern, the secondinternal connection lines can be desirably straight lines extending inthe second direction. The plurality of second internal connection linesRx_L1 are formed to be straight lines so that resistance of the secondinternal connection lines Rx_L1 can be reduced. By doing this, the touchsignal applied through the second internal connection lines Rx_L1 iseffectively transmitted so that a response speed of the touch screenpanel 113 can be improved.

The second internal connection lines Rx_L1 are illustratively expressedas straight lines, but are not limited thereto and can be configured ina pattern which is not a straight line. The second internal connectionlines Rx_L1 can be formed along banks between the plurality of subpixels R, G, B in a direction parallel to the second external connectionlines Rx_L2.

In other words, in order to form the second internal connection linesRx_L1 to be straight lines, the shape of the sub pixels of the displaypanel can be modified. For example, in order to form the second internalconnection lines Rx_L1 to be straight lines, shapes of the sub pixels Rand G located on both sides of the second internal connection linesRx_L1 can be designed in the form of facing triangles. Here, the shapesof the sub pixels R and G can be triangles which are designed such thatone sides of the triangles are parallel to each other with respect tothe first internal connection lines Rx_L1.

In some embodiments, the first mesh patterns Tx_M having a rhombic shapeextending in the first direction and the second mesh patterns Rx_Mhaving a rhombic shape extending in the first direction are alternatelydisposed in the second direction. The first straight internal connectionlines Tx_L1 extending in the second direction and the second straightinternal connection lines Rx_L1 extending in the second direction arealternately disposed in the first direction, but the arrangement is notlimited thereto. According to the above-described configuration, theresistance of the touch sensor TS can be minimized by the straightinternal connection lines Tx_L1 and Rx-L1 and the touch sensitivity canbe improved by the mesh pattern.

Referring to FIGS. 4B and 5A, the plurality of second externalconnection lines Rx_L2 serve to connect the second mesh pattern Rx_M ofthe touch sensor TS with the external component(s).

For example, the plurality of second external connection line Rx_L2connect the plurality of second mesh patterns Rx_M to an external touchsensor TS adjacent thereto or connects the plurality of second meshpatterns Rx_M to the first to third routing lines RL1, RL2, and RL3.

Specifically, the plurality of second external connection line Rx_L2will be described with respect to the third touch sensor TS3 illustratedin FIG. 1. The plurality of second external connection lines Rx_L2disposed in the fourth touch area TA4 of the third touch sensor TS3 areconnected to the second touch sensor TS2 disposed at a left side of thethird touch sensor TS3. The plurality of second external connection lineRx_L2 disposed in the sixth touch area TA6 of the third touch sensor TS3are connected to the first routing line RL1 disposed at a right side ofthe third touch sensor TS3.

Here, even though the second external connection lines Rx_L2 can also beformed in various patterns, such as a zigzag pattern, the secondexternal connection lines can be desirably straight lines extending inthe second direction. The plurality of second external connection linesRx_L2 are formed to be straight lines so that the resistance of thesecond external connection lines Rx_L2 can be reduced. By doing this,the touch signal applied through the second external connection linesRx_L2 is effectively transmitted so that a response speed of the touchscreen panel 113 can be improved.

The second external connection lines Rx_L2 are illustratively expressedas straight lines, but are not limited thereto and can be configured ina pattern which is not a straight line. The second external connectionlines Rx_L2 can be formed along banks between the plurality of subpixels R, G, B in a direction intersecting the first external connectionlines Tx_L2.

As shown in FIG. 4B, a zigzag type connection pattern Rx_C is disposedin the first direction to be connected to the second external connectionline(S) Rx_L2 extending in the second direction and connected to thesecond mesh pattern Rx_M and the second internal connection line Rx_L1formed in another layer to bring the second mesh pattern Rx_M, thesecond internal connection line Rx_L1, and the second externalconnection line Rx_L2 in electrical contact with each other.

Further, as illustrated in FIG. 4B, the connection pattern Rx_C can havea zigzag pattern partially overlapping the second mesh pattern Rx_M, butis not limited thereto, and can have various shapes such as a straightline or a mesh. An arrangement of a specific connection pattern Rx_Cwill be described below with reference to FIGS. 5A and 5B.

Further, the plurality of second mesh patterns Rx_M, the second internalconnection lines Rx_L1, the connection patterns Rx_C, and the secondexternal connection lines Rx_L2, which configure the second touchelectrode unit Rx, can be formed of a metal having a high electricconductivity. For example, the plurality of second mesh patterns Rx_M,the second internal connection lines Rx_L1, the connection patternsRx_C, and the second external connection lines Rx_L2, which configurethe second touch electrode unit Rx, can be formed of a single layer ormultiple layers formed of aluminum (Al), copper (Cu), molybdenum (Mo),chrome (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), oran alloy thereof. As described above, the second touch electrode unit Rxis formed of the metal having an excellent electric conductivity so thata touch signal for driving the touch screen panel 113 can be quicklytransmitted from the external touch driver to the second touch electrodeunit Rx. Since the touch signal transmitting speed is improved, thetouch driver can quickly sense the touch operation of the user so thatthe response speed of the touch screen panel 113 can be improved.

FIG. 5A is an enlarged view of a region B illustrated in FIG. 3B andFIG. 5B is a cross-sectional view taken along the line Vb-Vb′illustrated in FIG. 5A.

As illustrated in the example of FIG. 5A, the second external connectionline Rx_L2 and the connection pattern Rx_C which are represented by thedotted line are connected to each other on the same layer. Further, thesecond mesh pattern Rx_M and the second internal connection line Rx_L1which are represented by the solid line are disposed on the differentlayer from a layer in which the above-described second connection lineRx_L2 and the connection pattern Rx_C are formed. The connection patternRx_C and the second mesh pattern Rx_M formed in different layers areelectrically connected through a plurality of contact holes CNT.

Specifically, as illustrated in FIG. 5B, an insulating layer INS isformed between the layer in which the second external connection lineRx_L2 and the connection pattern Rx_C are formed and the layer in whichthe second mesh pattern Rx_M and the second internal connection lineRx_L1 are formed. The connection pattern Rx_C and the second meshpattern Rx_M formed in different layers are electrically connectedthrough at least one contact hole CNT formed in the insulating layerINS. By doing this, the second mesh pattern Rx_M can be connected to thesecond external connection line Rx_L2 through at least one contact holeCNT.

An interlayer structure of the first touch electrode unit Tx and thesecond touch electrode unit Rx will be summarized as follows. Theplurality of first mesh patterns Tx_M, the first internal connectionlines Tx_L1, and the first external connection lines Tx_L2, whichconfigure the first touch electrode unit Tx, and the second externalconnection lines Rx_L2 and the connection patterns Rx_C of the secondtouch electrode unit Rx are formed in a first layer which is the samelayer. However, the second mesh patterns Rx_M and the second internalconnection lines Rx_L1 of the second touch electrode unit Rx are formedin a second layer which is different from the first layer.

The insulating layer INS is disposed between the first layer and thesecond layer for electrical insulation. However, the second mesh patternRx_M, the second internal connection line Rx_L1, the second externalconnection line Rx_L2, and the connection pattern Rx_C of the secondtouch electrode unit Rx are electrically connected to each other throughthe plurality of contact holes CNT formed in the insulating layer INS.Therefore, the first touch electrode unit Tx and the second touchelectrode unit Rx are electrically separated.

FIG. 6 is an enlarged view of a region A illustrated in FIG. 2A.

As described above, the first touch electrode unit Tx and the secondtouch electrode unit Rx are electrically separated.

Accordingly, as illustrated in FIG. 6, a mutual capacitance CM betweenthe first mesh pattern Tx_M and the second mesh pattern Rx_M, a mutualcapacitance CM between the first mesh pattern Tx_M and the secondinternal connection line, a mutual capacitance CM between the firstinternal connection line Tx_L1 and the second mesh pattern Rx_M, and amutual capacitance CM between the first internal connection line Tx_L1and the second internal connection line are generated.

The first touch electrode unit Tx and the second touch electrode unit Rxare disposed to intersect each other in the fifth touch area TA5 whichis a sensing area, so that the mutual capacitance CM for touch sensingcan be maximized.

In contrast, the first to third touch areas TA1 to TA3 and the seventhto ninth touch areas TA7 to TA9, which are not sensing areas, do notinvolve touch sensing so that a redundant parasitic capacitance with theinside and the outside of the touch screen panel 133 can be reduced.Therefore, a redundant load of the touch screen panel 113 is minimizedso that the touch response speed of the touch screen panel 113 can beimproved.

Here, the size of the fifth touch area TA5 which is a sensing area canbe set to 9/4 or less of the entire size of the touch sensor TS. Whenthe size of the fifth touch area TA5 is larger than 9/4 of the entiresize of the touch sensor TS, a parasitic capacitance in the touch screenpanel 113 or a parasitic capacitance with the outside of the touchscreen panel 113 is increased so that a redundant load of the touchscreen panel 113 is increased. Therefore, the touch response speed ofthe touch screen panel 113 is lowered. Therefore, in order to improvethe response speed of the touch screen panel 113, the size of the fifthtouch area TA5 which is a sensing area can be set to 9/4 or less of theentire size of the touch sensor TS.

Further, when the fifth touch area TA5 is larger than 9/4 of the touchsensor, a position between coordinates is not subdivided, so that thetouch precision can be lowered.

FIGS. 7A and 7B are views for explaining two examples of a dummyelectrode of a touch screen panel according to an embodiment of thepresent disclosure.

The touch sensor TS of the touch screen panel 113 according to theembodiment of the present disclosure can further include mesh patterndummy electrodes DM1 and DM2.

The dummy electrodes DM1 and DM2 can be formed of a mesh pattern metalover the first touch area TA1 to the ninth touch area TA9.

That is, the dummy electrodes DM1 and DM2 can be formed of a meshpattern metal in an area excluding an area where the first touchelectrode unit Tx and the second touch electrode unit Rx are disposedamong the entire area of the first touch sensor TS1.

Specifically, as shown in FIG. 7A, when a second layer is disposed abovethe above-described first layer, the dummy electrode DM1 can be formedof the mesh pattern metal in an area excluding the area where the secondmesh pattern Rx_M and the second internal connection line Rx_L1 of thesecond touch electrode Rx are disposed on the second layer which is anupper layer.

As another example, as shown in FIG. 7B, when the first layer isdisposed above the above-described second layer, the dummy electrode DM2can be formed of the mesh pattern metal in an area excluding an areawhere the plurality of first mesh patterns Tx_M, the first internalconnection line Tx_L1, and the first external connection line Tx_L2which configure the first touch electrode unit Tx and the secondexternal connection line Rx_L2 and the connection pattern Rx_C of thesecond touch electrode unit Rx are disposed on the first layer which isthe upper layer.

Here, the mesh pattern of the dummy electrodes DM1 and DM2 can have thesame size and the same pattern as the first mesh pattern and the secondmesh pattern described above, but it is not limited thereto.

As described above, in the touch screen panel 113 according to theembodiment of the present disclosure, the dummy electrodes DM1 and DM2are formed so that the same mesh pattern can be formed in the entirearea of the first touch sensor TS1 including the first to ninth touchareas TA1 to TA9. By doing this, the mesh pattern is uniformly disposedin the first touch sensor TS1 of the touch screen panel 113 so that aspecific pattern caused by the first touch sensor TS1 cannot beperceived by a viewer.

Further, the dummy electrodes DM1 and DM2 of the touch screen panel 113are coupled by a touch signal to serve as the first touch electrode unitTx. Consequently, the mutual capacitance Cm is additionally generated inthe touch sensor TS due to the dummy electrodes DM1 and DM2. Therefore,the touch sensitivity of the touch screen panel 113 can be improved.

Hereinafter, a display device including the above-described touch screenpanel according to an embodiment of the present disclosure will bedescribed. Even though a duplicated description of the above-describedtouch screen panel according to an embodiment of the present disclosurewill be omitted or brief, the display device including the touch screenpanel according to the embodiment of the present disclosure includes allthe technical features of the above-described touch screen panelaccording to the embodiment of the present disclosure.

FIG. 8 is a schematic block diagram of a display device including atouch screen panel according to an embodiment of the present disclosure.All the components of the display device according to all embodiments ofthe present disclosure are operatively coupled and configured.

Referring to FIG. 8, a display device 100 includes a display panel 111,a touch screen panel 113, a data driver 120, a gate driver 130, and atouch driver 140. Here the touch screen panel 113 preferably is thetouch screen panel 113 of FIGS. 1-7B.

The display panel 111 includes a substrate using glass or plastic and aplurality of gate lines GL and a plurality of data lines DL disposed onthe substrate to intersect each other. A plurality of pixels PX aredefined at the intersections of the plurality of gate lines GL and theplurality of data lines DL. Each of the plurality of pixels PX of thedisplay panel 111 includes at least one thin film transistor.

Further, when the display device 100 according to the embodiment of thepresent disclosure is an electroluminescent display device, electriccurrent is applied to an electroluminescent diode equipped in theplurality of pixels PX, and discharged electrons and holes are coupledto generate excitons. The excitons emit light to implement a gray scaleof the electroluminescent display device.

The display device 100 according to the embodiment of the presentdisclosure is not limited to the electroluminescent display device, butcan be various types of display device such as a liquid crystal displaydevice.

FIG. 9 is a view for explaining a pixel of a display device including atouch screen panel according to an embodiment of the present disclosure.In this example, the pixel can be the pixel PX in the display device ofFIG. 8, which includes the touch screen panel 113.

Referring to FIG. 9, the plurality of pixels PX includes a plurality ofsub pixels R, G, and B to implement light of a specific color. Forexample, the plurality of pixels PX can be configured by a red sub pixelR which implements red, a green sub pixel G which implements green, anda blue sub pixel B which implements blue, but are not limited thereto.

The red sub pixel R, the green sub pixel G, and the blue sub pixel B areenclosed by a bank BNK. That is, the red sub pixel R, the green subpixel G, and the blue sub pixel B are divided by the bank BNK. CathodesCTD (FIG. 10) are formed below the red sub pixel R, the green sub pixelG, and the blue sub pixel B to drive the red sub pixel R, the green subpixel G, and the blue sub pixel B. In addition, a cathode may cover thebank BNK and the sub pixels R, G, and B.

Here, shapes of the sub pixels R, G, and B can be configured by atriangle or a rhombic shape in consideration of a performance of thetouch sensor TS and a quality of an image. Therefore, it is easy tosimultaneously provide a zigzag electrode and a straight line electrode,but it is not limited thereto. In other words, the shape of the subpixels R, G, and B is represented by a triangle or a rhombus, for theconvenience of description. However, substantially, a corner thereof canbe formed not to be sharp and each side can be formed to be curved,rather than a straight line. A non-sharp corner in a respective subpixel may have the effect that current concentration at this corner,which may generate heat and may damage the sub pixel, may be reducedcompared to a sharp corner.

The touch screen panel 113 is bonded onto the display panel 111 to sensea touch input of the user. Specifically, the touch screen panel 113includes a plurality of touch sensors TS and each touch sensor TS sensesthe touch of the user. Here, the touch sensor TS can be formed to have asize corresponding to a size of the plurality of pixels PX.

FIG. 10 is a cross-sectional view illustrating a display deviceincluding a touch screen panel (e.g., the display device 100 of FIG. 9)according to an embodiment of the present disclosure.

As shown in FIGS. 9 and 10, the touch screen panel 113 includes thetouch sensors TS. Each touch sensor TS includes a first touch electrodeunit Tx and a second touch electrode unit Rx, and the first touchelectrode unit Tx and the second touch electrode Rx are disposed on thebank BNK of the display panel 111.

Specifically, referring to FIG. 10, the display device 100 includes thedisplay panel 111 including a red sub pixel R, a green sub pixel G, anda blue sub pixel B defined by a plurality of banks BNK and the touchscreen panel 113 including a first touch electrode unit Tx and a secondtouch electrode unit Rx.

Here, the display panel 111 and the touch screen panel 113 are bondedwhile maintaining a predetermined cell gap g. Further, the display panel111 having a structure which is advantageous to be flexible isconfigured to include an encapsulating layer and an adhesive layer, andthe cell gap g is determined from the structure. The cell gap g of theelectroluminescent display device can be reduced to 5 μm to 30 μm forthe purpose of flexible performance. Specifically, the thinner the cellgap g, the larger the parasitic capacitance by the cathode CTD. However,even though the cell gap g is reduced by the structure of the touchsensor TS according to an embodiment of the present disclosure, theparasitic capacitance can be easily lowered. Therefore, the touchperformance and the response speed can be improved.

For the convenience of description, the first touch electrode unit Txand the second touch electrode unit Rx are unified as a mesh electrodeME and will be described below referring to FIGS. 9 and 10.

The touch screen panel 113 and the display panel 111 can be bonded sothat the mesh electrode ME of the touch screen panel 113 is disposed ona bank BNK of the display panel 111.

Here, the bank BNK does not emit light so that even though the meshelectrode ME, that is, the first touch electrode unit Tx and the secondtouch electrode Rx are disposed on the bank BNK, the transmittance ofthe display device 100 cannot be substantially deteriorated. The meshelectrode ME can be a metal electrode.

The first touch electrode unit and the second touch electrode unit Rxare disposed on the bank BNK so that red light, green light, and bluelight emitted from the red sub pixel R, the green sub pixel G, and theblue sub pixel B are not mixed.

That is, the mesh type first touch electrode unit Tx and the mesh typesecond touch electrode unit Rx are disposed on the mesh type bank BNK sothat the optical property of the display panel 111 can be improved.

In some embodiments, when a distance d between the sub pixel R, G, B andanother adjacent sub pixel R, G, and B is 22 μm to 26 μm and the cellgap g is 21 μm to 25 μm, a width (Wm) of each of all the mesh electrodesME which configure the first electrode unit Tx and the second touchelectrode unit Rx can be 1 μm to 5 μm.

When the width of all the mesh electrodes ME which configure the firsttouch electrode unit Tx and the second touch electrode unit Rx is largerthan 5 μm, the transmittance of the display device is significantlylowered due to the touch screen disposed on the display panel so that animage quality is lowered. Further, when the width of the mesh electrodeME which configures the first touch electrode unit Tx and the secondtouch electrode unit Rx is smaller than 1 μm, red light, green light,and blue light emitted from the red sub pixel R, the green sub pixel G,and the blue sub pixel B are disadvantageously mixed.

But, the present disclosure is not limited thereto and a width of themesh electrode ME which configures the first touch electrode unit Tx andthe second touch electrode unit Rx can be determined depending on adistance d between the sub pixels R, G, and B and other sub pixels R, G,and B adjacent thereto.

The touch sensors TS are connected to the touch driver 140 through oneor more touch lines TL connected to the first pad PAD1 and the secondpad PAD2 of the touch screen panel 113. The touch driver 140 and thetouch sensors TS are connected as described above to sense the touch ofthe user.

The touch driver 140 is connected to the touch sensor TS through thetouch line TL to determine whether there is a touch of the user and atouch position. That is, when the user touches a partial area of thetouch screen panel 113, the touch driver 140 senses a change of thecapacitance of the touch sensor TS disposed in the touched partial areaof the touch screen panel 113 to determine whether the user touches thetouch screen panel 113 and the touch position.

Specifically, the touch driver 140 can transmit or receive a touchsignal which is a specific level of a square wave through the touchsensor TS. The touch driver 140 senses a change ΔC of the capacitance ofthe touch sensor TS through the touch signal applied to the touch sensorTS. The touch driver 140 can sense the touch of the touch screen panel113 through the above-described process. The method of sensing the touchusing the touch sensor TS is classified into: (a) a mutual capacitivemanner which senses a change of the mutual capacitance of the touchsensor and (b) a self-capacitive manner which senses a self-capacitanceof the touch sensor.

The gate driver 130 sequentially supplies a gate voltage of anon-voltage or an off-voltage to the gate line GL in accordance with agate control signal GCS output from a timing controller.

The gate control signal GCS includes a gate start pulse GSP, a gateshift clock GSC, and a gate output enable signal GOE.

Here, the gate start pulse GSP controls an operation start timing of oneor more gate circuits which configure the gate driver 130. The gateshift clock is a clock signal which is commonly input to one or moregate circuits and controls a shift timing of the scan signal (gatepulse). The gate output enable signal designates timing information ofone or more gate circuits.

According to a driving method, the gate driver 130 can be located onlyat one side of the display panel 111 or located at both sides asnecessary.

The gate driver 130 can include a shift register and a level shifter.

The data driver 120 converts image data received from the timingcontroller into an analog data voltage Vdata based on the data controlsignal DCS to output the converted analog data voltage to the data lineDL.

Here, the data control signal DCS includes a source start pulse SSP, asource sampling clock SSC, and a source output enable signal SOE.

The source start pulse controls a data sampling start timing of one ormore data circuits which configure the data driver 120. The sourcesampling clock is a clock signal which controls a sampling timing ofdata in each data circuit. The source output enable signal controls anoutput timing of the data driver 120.

The data driver 120 can be connected to a bonding pad of the displaypanel 111 by a tape automated bonding method or a chip on glass methodor can be directly disposed on the display panel 111. As needed, thedata driver 120 can be disposed to be integrated in the display panel111.

The data driver 120 can include a logic unit including various circuitssuch as a level shifter or a latch unit, a digital analog converter DAC,and an output buffer.

As described above, the touch screen panel according to the aspects ofthe present disclosure forms mutual capacitance at maximum for sensingthe touch by disposing a first touch electrode unit and a second touchelectrode unit to intersect each other in a sensing area so that aredundant load can be minimized in an area other than the sensing areaof the touch screen panel to improve a touch response speed of the touchscreen panel.

Further, according to an aspect of the present disclosure, the displaydevice including the touch screen panel can dispose a mesh type firsttouch electrode and a mesh type second touch electrode on a mesh typebank to improve optical characteristics of the display panel.

The embodiments of the present disclosure can also be described asfollows.

According to an aspect of the present disclosure, a touch screen panelincludes a plurality of touch sensors and each of the touch sensorsincludes a first touch electrode unit extending in a first direction,and a second touch electrode unit extending in a second direction. Thefirst touch electrode unit includes a plurality of first mesh patternelectrodes that are disposed to be spaced apart from each other in asensing area where the first touch electrode unit and the second touchelectrode unit intersect. The second touch electrode unit includes aplurality of second mesh pattern electrodes that are disposed betweenthe plurality of first mesh pattern electrodes to be spaced apart fromeach other in the sensing area.

According to another aspect of the present disclosure, the first touchelectrode unit further includes a plurality of first internal connectionlines connecting the plurality of first mesh pattern electrodes disposedto be spaced apart from each other, and the second touch electrode unitfurther includes a plurality of second internal connection linesconnecting the plurality of second mesh pattern electrodes disposed tobe spaced apart from each other.

According to still another aspect of the present disclosure, theplurality of first connection lines are disposed to be spaced apart fromeach other, and the plurality of second connection lines are disposed inthe space between the plurality of first connection lines.

According to still another aspect of the present disclosure, theplurality of first internal connection lines and the plurality of secondinternal connection lines are straight lines.

According to still another aspect of the present disclosure, the firstmesh pattern electrodes and the second mesh pattern electrodes extend inthe same direction.

According to still another aspect of the present disclosure, the firsttouch electrode unit further includes a plurality of first externalconnection lines which connect the plurality of first mesh patterns ofany one touch sensor of the plurality of touch sensors and another touchsensor adjacent to that touch sensor, and the second touch electrodeunit further includes a plurality of second external connection lineswhich connect the plurality of second mesh patterns of any one touchsensor of the plurality of touch sensors and another touch sensoradjacent to that touch sensor.

According to still another aspect of the present disclosure, theplurality of second mesh patterns and the plurality of second externalconnection lines are disposed on different layers, an insulating layeris provided between a layer in which the plurality of second meshpatterns are formed and a layer in which the plurality of secondexternal connection lines are formed, and the plurality of second meshpatterns are connected to the second external connection line through atleast one contact hole formed in the insulating layer.

According to still another aspect of the present disclosure, a width ofat least one of the first mesh pattern electrode and the second meshpattern electrode is 1 μm to 5 μm.

According to still another aspect of the present disclosure, a size ofthe sensing area is 4/9 or less of a size of the entire area of thetouch sensor.

According to another aspect of the present disclosure, a display deviceincludes a display panel including a bank disposed on a substrate and aplurality of pixels defined by the bank, a touch screen panel includinga plurality of touch sensors, and a touch driver which drives the touchscreen panel. Each of the touch sensors includes a first touch electrodeunit which is disposed on the bank and extends in a first direction, anda second touch electrode unit which is disposed on the bank and extendsin a second direction. The first touch electrode unit includes aplurality of first mesh pattern electrodes which are disposed to bespaced apart from each other in a sensing area where the first touchelectrode unit and the second touch electrode unit intersect, and thesecond touch electrode unit includes a plurality of second mesh patternelectrodes which are disposed between the plurality of first meshpattern electrodes to be spaced apart from each other in the sensingarea.

According to another aspect of the present disclosure, the first touchelectrode unit further includes a plurality of first internal connectionlines connecting the plurality of first mesh pattern electrodes disposedto be spaced apart from each other, and the second touch electrode unitfurther includes a plurality of second internal connection linesconnecting the plurality of second mesh pattern electrodes disposed tobe spaced apart from each other.

According to still another aspect of the present disclosure, the firstmesh pattern electrodes and the second mesh pattern electrodes extend inthe same direction.

According to still another aspect of the present disclosure, the firsttouch electrode unit further includes a plurality of first externalconnection lines which connect the plurality of first mesh patterns ofany one touch sensor of the plurality of touch sensors and another touchsensor adjacent to that touch sensor, and the second touch electrodeunit further includes a plurality of second external connection lineswhich connect the plurality of second mesh patterns of any one touchsensor of the plurality of touch sensors and another touch sensoradjacent to that touch sensor.

According to still another aspect of the present disclosure, a width ofat least one of the first mesh pattern electrode and the second meshpattern electrode is 1 μm to 5 μm.

According to still another aspect of the present disclosure, a size ofthe sensing area is 4/9 or less of a size of the entire area of thetouch sensor.

According to still another aspect of the present disclosure, the sensingarea is provided in a middle area of each of the plurality of touchsensors, and the first and second touch electrode units are not disposedin corner areas of each of the plurality of touch sensors.

According to still another aspect of the present disclosure, the touchscreen panel further comprising: a dummy electrode extending to cover anarea surrounding the sensing area in each of the plurality of touchsensors.

According to still another aspect of the present disclosure, the dummyelectrode includes a first mesh pattern dummy electrode and a secondmesh pattern dummy electrode, and the first mesh pattern dummy electrodeand the second mesh pattern dummy electrode are coupled by a touchsignal.

According to still another aspect of the present disclosure, the touchscreen panel further includes a plurality of dummy electrodes formed ofa mesh pattern metal in an area excluding an area where the first touchelectrode unit and the second touch electrode unit are disposed amongthe entire area of the respective touch sensor.

According to another aspect of the present disclosure, a display deviceincludes a display panel including a bank disposed on a substrate and aplurality of pixels defined by the bank, a touch screen panel accordingto one or more embodiments described herein; and a touch driver whichdrives the touch screen panel, wherein each first touch electrode unitis disposed on the bank and each second electrode unit is disposed onthe bank.

According to still another aspect of the present disclosure, each pixelof the plurality of pixels includes a red sub pixel, a green sub pixel,and a blue sub pixel, wherein a shape of the red and green sub pixels istriangular or triangular-like, and wherein a shape of the blue sub pixelis rhombic or rhombic-like.

According to still another aspect of the present disclosure, green subpixels of pixels that are arranged in a first row face red sub pixels ofpixels that are arranged in a second row that is adjacent to the firstrow, wherein a first internal connection line that connects theplurality of first mesh pattern electrodes or a second internalconnection line that connects the plurality of second mesh patternelectrodes and which is a straight line is disposed between the firstrow and the second row.

According to still another aspect of the present disclosure, the bankincludes a straight-line portion that overlaps the entire first internalconnection line or the entire second internal connection line.

According to still another aspect of the present disclosure, a firstmesh pattern electrode surrounds the blue sub pixels of the pixels thatare arranged in a first column, wherein a second mesh pattern electrodesurrounds the blue sub pixels of the pixels that are arranged in asecond column that is adjacent to the first column.

According to still another aspect of the present disclosure, the firstinternal connection line or the second internal connection line isformed along banks between a plurality of sub-pixels R, G, and B of adisplay panel, shapes of the sub-pixels R and G located on both sides ofthe first internal connection line or the second internal connectionline being designed in the form of facing triangles to form the firstinternal connection line or the second internal connection line to be astraight line.

According to still another aspect of the present disclosure, theplurality of first mesh pattern electrodes and the plurality of secondmesh pattern electrodes are alternatingly disposed in the sensing area.

According to still another aspect of the present disclosure, the sensingarea is provided in a middle area of each of the plurality of touchsensors, and the first and second touch electrode units are not disposedin corner areas of each of the plurality of touch sensors.

According to still another aspect of the present disclosure, the touchscreen panel further comprising: a dummy electrode extending to cover anarea surrounding the sensing area in each of the plurality of touchsensors.

According to still another aspect of the present disclosure, the dummyelectrode includes a first mesh pattern dummy electrode and a secondmesh pattern dummy electrode, and the first mesh pattern dummy electrodeand the second mesh pattern dummy electrode are coupled by a touchsignal.

According to still another aspect of the present disclosure, theplurality of first mesh pattern electrodes and the plurality of secondmesh pattern electrodes are alternatingly disposed in the sensing area.

According to still another aspect of the present disclosure, the sensingarea is provided in a middle area of each of the plurality of touchsensors, and the first and second touch electrode units are not disposedin corner areas of each of the plurality of touch sensors.

According to still another aspect of the present disclosure, the touchscreen panel further comprising: a dummy electrode extending to cover anarea surrounding the sensing area in each of the plurality of touchsensors.

According to still another aspect of the present disclosure, the dummyelectrode includes a first mesh pattern dummy electrode and a secondmesh pattern dummy electrode, and the first mesh pattern dummy electrodeand the second mesh pattern dummy electrode are coupled by a touchsignal.

According to still another aspect of the present disclosure, the sensingarea is provided in a middle area of each of the plurality of touchsensors, and the first and second touch electrode units are not disposedin corner areas of each of the plurality of touch sensors.

According to still another aspect of the present disclosure, the touchscreen panel further comprising: a dummy electrode extending to cover anarea surrounding the sensing area in each of the plurality of touchsensors.

According to still another aspect of the present disclosure, the dummyelectrode includes a first mesh pattern dummy electrode and a secondmesh pattern dummy electrode, and the first mesh pattern dummy electrodeand the second mesh pattern dummy electrode are coupled by a touchsignal.

Although the embodiments of the present disclosure have been describedin detail with reference to the accompanying drawings, the presentdisclosure is not limited thereto and can be embodied in many differentforms without departing from the technical concept of the presentdisclosure. Therefore, the embodiments of the present disclosure areprovided for illustrative purposes only but not intended to limit thetechnical concept of the present disclosure. The scope of the technicalconcept of the present disclosure is not limited thereto. Therefore, itshould be understood that the above-described embodiments areillustrative in all aspects and do not limit the present disclosure. Theprotective scope of the present disclosure should be construed based onthe following claims, and all the technical concepts in the equivalentscope thereof should be construed as falling within the scope of thepresent disclosure.

What is claimed is:
 1. A touch screen panel comprising: a plurality oftouch sensors, wherein each of the touch sensors includes: a first touchelectrode unit extending in a first direction; and a second touchelectrode unit extending in a second direction different from the firstdirection, wherein the first touch electrode unit includes a pluralityof first mesh pattern electrodes that are disposed to be spaced apartfrom each other in a sensing area where the first touch electrode unitand the second touch electrode unit intersect, and wherein the secondtouch electrode unit includes a plurality of second mesh patternelectrodes that are disposed between the plurality of first mesh patternelectrodes to be spaced apart from each other in the sensing area. 2.The touch screen panel according to claim 1, wherein the first touchelectrode unit further includes a plurality of first internal connectionlines connecting the plurality of first mesh pattern electrodes, andwherein the second touch electrode unit further includes a plurality ofsecond internal connection lines connecting the plurality of second meshpattern electrodes.
 3. The touch screen panel according to claim 2,wherein the plurality of first connection lines are disposed to bespaced apart from each other, and wherein the plurality of secondconnection lines are disposed in a space between the plurality of firstconnection lines.
 4. The touch screen panel according to claim 2,wherein the plurality of first internal connection lines and theplurality of second internal connection lines are straight lines.
 5. Thetouch screen panel according to claim 1, wherein the first mesh patternelectrodes and the second mesh pattern electrodes extend in a samedirection.
 6. The touch screen panel according to claim 1, wherein thefirst touch electrode unit further includes a plurality of firstexternal connection lines that connect the plurality of first meshpatterns of any one touch sensor of the plurality of touch sensors toanother touch sensor adjacent to the one touch sensor, and wherein thesecond touch electrode unit further includes a plurality of secondexternal connection lines that connect the plurality of second meshpatterns of any one touch sensor of the plurality of touch sensors andanother touch sensor adjacent to the one touch sensor.
 7. The touchscreen panel according to claim 6, wherein the plurality of second meshpatterns and the plurality of second external connection lines aredisposed on different layers, wherein an insulating layer is providedbetween a layer in which the plurality of second mesh patterns areformed and a layer in which the plurality of second external connectionlines are formed, and wherein the plurality of second mesh patterns areconnected to the second external connection line through at least onecontact hole formed in the insulating layer.
 8. The touch screen panelaccording to claim 1, wherein a width of each of the first mesh patternelectrode and the second mesh pattern electrode is approximately 1 μm to5 μm.
 9. The touch screen panel according to claim 1, wherein a size ofthe sensing area of one touch sensor among the plurality of touchsensors is approximately 4/9 or less of a size of the entire area of theone touch sensor.
 10. The touch screen panel according to claim 1,wherein the plurality of first mesh pattern electrodes and the pluralityof second mesh pattern electrodes are alternatingly disposed in thesensing area.
 11. The touch screen panel according to claim 1, whereinthe sensing area is provided in a middle area of each of the touchsensors, and wherein the first and second touch electrode units are notdisposed in corner areas of each of the touch sensors.
 12. The touchscreen panel according to claim 1, further comprising: a dummy electrodeextending to cover an area surrounding the sensing area in each of thetouch sensors.
 13. A display device, comprising: a display panelincluding a bank disposed on a substrate and a plurality of pixelsdefined by the bank; a touch screen panel including a plurality of touchsensors; and a touch driver which drives the touch screen panel, whereineach of the touch sensors includes: a first touch electrode unitdisposed on the bank and extending in a first direction; and a secondtouch electrode unit disposed on the bank and extending in a seconddirection different from the first direction, wherein the first touchelectrode unit includes a plurality of first mesh pattern electrodesthat are disposed to be spaced apart from each other in a sensing areawhere the first touch electrode unit and the second touch electrode unitintersect, and wherein the second touch electrode unit includes aplurality of second mesh pattern electrodes that are disposed betweenthe plurality of first mesh pattern electrodes to be spaced apart fromeach other in the sensing area.
 14. The display device according toclaim 13, wherein the first touch electrode unit further includes aplurality of first internal connection lines connecting the plurality offirst mesh pattern electrodes disposed to be spaced apart from eachother, and wherein the second touch electrode unit further includes aplurality of second internal connection lines connecting the pluralityof second mesh pattern electrodes disposed to be spaced apart from eachother.
 15. The display device according to claim 13, wherein the firstmesh pattern electrodes and the second mesh pattern electrodes extend ina same direction.
 16. The display device according to claim 13, whereinthe first touch electrode unit further includes a plurality of firstexternal connection lines that connect the plurality of first meshpatterns of any one touch sensor of the plurality of touch sensors andanother touch sensor adjacent to the one touch sensor, and wherein thesecond touch electrode unit further includes a plurality of secondexternal connection lines that connect the plurality of second meshpatterns of any one touch sensor of the plurality of touch sensors andanother touch sensor adjacent to the one touch sensor.
 17. The displaydevice according to claim 13, wherein a width of each of the first meshpattern electrode and the second mesh pattern electrode is approximately1 μm to 5 μm.
 18. The display device according to claim 13, wherein asize of the sensing area of one touch sensor among the plurality oftouch sensors is approximately 4/9 or less of a size of the entire areaof the one touch sensor.
 19. The display device according to claim 13,wherein the sensing area is provided in a middle area of each of thetouch sensors, and wherein the first and second touch electrode unitsare not disposed in corner areas of each of the touch sensors.
 20. Thedisplay device according to claim 13, wherein the touch screen panelfurther comprises a dummy electrode extending to cover an areasurrounding the sensing area in each of the touch sensors.